Canadian sphagnum peat moss is your best long term amendment. Irrigation usually requires an acidic additive or it can bring the pH up over time. Mulching with pine straw, using acid based nitrogen fertilizer (46-0-0).

These are things we've done (small scale) based on MSU extension advice...oh yeah, talk to your local extension office

Mich state has tons of great blueberry info, you should contact your state university extension too.

Ratio depends on ph if your soil.. Have you had a full soil sample work up done? If not, do that and go over it with extension office. They will clue you into more than just blueberries. Might find cross you hadn't considered.

Peat is 4.5ish pH. So if your soil is 8, and you do 50/50, you'll get about 6, which is still to high

I add coffee grinds to mine. I've got about 10 plants, east facing, on my porch, in Northern California. /u/noware6 sounds like he/she knows what he/she is talking about. I'm just a guy with a kid that loves blueberries.

Large clay planter pots. I bought each plant already growing. Bought my first two at a fancy gardening store, the rest were purchased at Grocery Outlet, as they had many different varieties for $5.99 a plant, which I thought was a good deal. Soil was bought at Home Depot and mixed with mulch I believe (my wife may have done most of the mixing/planting).

Keeping a pile of yard litter that has a lot of wood scraps in it, in a three foot ring around your bushes, so that there is always fresh compost around it, will keep things acidic, and, you'll be fertilizing to some extent as you add more material.

We are already in a somewhat acidic area, but we always rake up a pile of leaves under our bushes in the spring and fall. We've never had problems with nitrogen loss associated with composting either.